Wheel hub



FIG. 1 is a perspective view of the wheel hub of my design, shown mounted on an associated wheel drawn in broken lines;

FIG. 2 is a top view of the wheel hub of FIG. 1; and,

FIG. 3 is a side view of the wheel hub of FIG. 1, it being understood that the opposite side is a mirror image thereof.

The broken lines in the drawings are for illustration only and do not constitute part of the claimed design. 

The ornamental design for a wheel hub, as shown and described. 